CN105301687B - Polarizer can be coated with and there is its liquid crystal display device - Google Patents
Polarizer can be coated with and there is its liquid crystal display device Download PDFInfo
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- CN105301687B CN105301687B CN201510333413.6A CN201510333413A CN105301687B CN 105301687 B CN105301687 B CN 105301687B CN 201510333413 A CN201510333413 A CN 201510333413A CN 105301687 B CN105301687 B CN 105301687B
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- polarization layer
- dichroic dye
- color
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133533—Colour selective polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Provide it is a kind of be coated with polarizer and with the liquid crystal display device of polarizer can be coated with, this can be coated with polarizer and produce low manufacturing cost and have excellent degree of polarization and transmissivity.It can be coated with polarizer formed with multiple polarization layers, and each in polarization layer includes about 5wt% to 7wt% dichroic dye, thus the light component parallel with the differently- oriented directivity of dichroic dye among the light with the wavelength corresponding with color is absorbed with polarization characteristic.
Description
Technical field
This disclosure relates to polarizer, and more particularly, to high-polarization and transmissivity and low-cost applying
Cloth polarizer and the liquid crystal display that polarizer can be coated with including this.
Background technology
Generally, liquid crystal display includes being arranged to facing with each other at a predetermined interval two substrates and injects the two substrates
Between liquid crystal layer.Here, liquid crystalline phase has refractive anisotrop for short axle and major axis, light is set to have when through liquid crystal layer
The refractive index changed, desired image can be obtained by the transmissivity for adjusting light.
In order to adjust light transmission, polarizer is attached to described two substrates.Here, polarizer is oriented to along optical axis side
It is parallel or vertical to each other, the transmissivity of liquid crystal layer or the light exported from liquid crystal layer is incident to adjustment, so as to obtain image.
Generally, polarizer is formed in the following way：Based on the absorption of dichroic dye to polyvinyl alcohol (PVA) Ji Shu
Adipose membrane is coloured and is uniaxially oriented or biaxially oriented, then by adhesive layer polarizer dichroic dye thereon
Transparent resin film is stacked on the surface or two surfaces being oriented, is based particularly on Triafol T (TAC)
For the polarizer protecting film of the cellulose acetate of representative.Polarizer is combined with liquid crystal panel using adhesive.
However, when manufacturing polarizer by related art method as described above, polarizer is thicker, causes the inclined of manufacture
Shake device heat resistance and moisture-proof difference the shortcomings that, and especially, due to having carried out orientation process (or stretching to PVA polarizers
Technique) and dyeing, so the process time extends and manufacturing cost increase.
In order to solve these problems, it is recently proposed and is coated with polarizer by what coated options manufactured.
Polarizer, which can be coated with, includes guest-host type polarizer, molten cause type polarizer etc..In host and guest's polarizer, as object
R dyestuffs, G dyestuffs and B dyestuffs mix with the liquid crystal as main body, and work as differently- oriented directivity of the main body along the oriented layer below main body
When being orientated, R dyestuffs, G dyestuffs and B dyestuffs are also orientated to absorb the light parallel with the differently- oriented directivity (absorption direction) of dyestuff simultaneously
The light vertical with the differently- oriented directivity of dyestuff is set to pass through dyestuff, so that light polarization.In molten cause type polarizer, it is molten cause polymer into
Row orientation is so that light polarization.In addition, it also been proposed wire grid polarizer.In wire grid polarizer, metal nanometer line exists
It is orientated in substrate along predetermined direction and the polarization direction of incident light determines according to the differently- oriented directivity of metal nanometer line.
Among various polarizers, guest-host type polarizer is mainly studied because of easily fabricated and low manufacturing cost.
However, guest-host type polarizer has following problem.
As described above, in guest-host type polarizer, due to the R dyestuffs, G dyestuffs and B dyestuffs as object and main body is used as
Liquid crystal mix so that liquid crystal aligning, and therefore, R dyestuffs, G dyestuffs and B dyestuffs are orientated along specific direction.Here, dyestuff, visitor
Body material can not absorb each visible ray, and therefore, three kinds to five types of dyestuff is mixed for light absorbing
Specific polarization component.
However, in correlation technique polarizer, because the object of several types mixes with main body, so being not easy with appropriate
Ratio mix subject and object, and therefore, it is not possible to make object exactly along main body be orientated.As solution,
Subject and object mixes in the proper ratio so that object is accurately orientated.However, in this case, due to various types of
Object is not sufficiently mixed, so degree of polarization is not consistent in the gamut of luminous ray, so as to reduce degree of polarization.
The content of the invention
Therefore, the one side of detailed description, which provides, a kind of is coated with polarizer and with can be coated with the liquid crystal of polarizer
Display device, this can be coated with polarizer and produce low manufacturing cost and the transmissivity and degree of polarization that have had.
In order to obtain these and other advantages and according to the purpose of the specification, as implemented and being broadly described herein
, a kind of polarizer can include：Substrate；And form multiple polarization layers in substrate, wherein each in polarization layer
Dichroic dye including main body and with different colours.Dichroic dye can be orchil, green colouring material and indigo plant
Color dyestuff or cyan dye, weld and magenta dye.Polarization layer can include three polarization layers, each include having not
Two polarization layers can be included with the dyestuff of color, or polarization layer, wherein one layer includes the dye with a type of color
Expect and another layer includes the dyestuff with two kinds of color.
The content for being included in the dichroic dye in each polarization layer in polarization layer can be in 1wt% to 7wt%'s
In the range of, and preferably, in the range of 3wt% to 7wt%, in two polarization layers, be included in a polarizer
The content of a type of dichroic dye can be in the range of 1wt% to 7wt%, and is included in another polarization layer
In the content of two kinds of dichroic dye can be in the range of 1wt% to 3wt%.
In order to obtain these and other advantages and according to the purpose of the specification, as implemented herein and describing extensively
, a kind of liquid crystal display (LCD) device can include：In the liquid crystal panel of display image thereon；And two with liquid crystal panel
The polarizer of at least one surface attachment in individual surface, wherein polarizer include substrate and multiple polarization layers, wherein each
Polarization layer includes the dichroic dye with different colours.
According to the disclosure embodiment, due to liquid crystal polymer (or liquid crystal polymer) or liquid crystal monomer (or liquid
Brilliant small molecule) and dichroic dye be mixed and be coated in substrate to manufacture polarizer, it is possible to reduction be manufactured into
This and can strengthen heat resistance and moisture-proof.
Further, since the dichroic dye formed with multiple polarization layers and with different colours is included in polarization layer
In, so compared with the situation that the dyestuff of many of type is included in single polarization layer, larger amount of dyestuff can be included.
Therefore, even if working as formed with relatively thin polarization layer compared with single polarization layer, there is the ripple corresponding with the color of corresponding dyestuff
Long light can also be completely absorbed, so as to increase degree of polarization and transmissivity.
According to detailed description given hereinafter, the scope of the further practicality of the application will be apparent.However,
It should be understood that due to various change to those skilled in the art within the spirit and scope of the present invention and repair
Changing will become obvious from detailed description, so while the preferred embodiments of the invention are shown, describe in detail and specific
Example only provides by way of illustration.
Brief description of the drawings
The present invention includes accompanying drawing to provide a further understanding of the present invention, and the accompanying drawing is incorporated herein and forms this
Part for specification, accompanying drawing shows exemplary and the accompanying drawing is used to illustrate original of the invention together with the description
Reason.
In the accompanying drawings：
Figure 1A is the sectional view for the structure for showing the liquid crystal display according to one embodiment of the disclosure；
Figure 1B is the sectional view along Figure 1A line I-I' interceptions；
Fig. 2 is the sectional view for the structure for showing the polarizer according to one embodiment of the disclosure；
Fig. 3 is the view for the arrangement for showing the subject and object in polarizer；
Fig. 4 A to Fig. 4 D are to show sectional view of the manufacture according to the method for the polarizer of one embodiment of the disclosure；
Fig. 5 A to Fig. 5 C are the sectional views for the structure for showing the polarizer according to disclosure another embodiment；And
Fig. 6 is the sectional view for the structure for showing the polarizer according to disclosure another embodiment.
Embodiment
The detailed description to exemplary is provided now with reference to accompanying drawing.In order to be briefly described referring to the drawings
See, identical or equivalent part will assign identical reference, and description thereof will not be repeated.
Figure 1A is the top view for the structure for showing liquid crystal display (LCD) device according to one embodiment of the disclosure, and
And Figure 1B is the sectional view along Figure 1A line I-I' interceptions.Here, the LCD device shown in Figure 1A and Figure 1B is to be changed in face
(IPS) mode LCD device, but disclosure not limited to this, but the LCD device of various patterns can also be applied to, such as distort
Nematic (TN) mode LCD device, vertical orientated (VA) mode LCD device, fringing field conversion (FFS) mode LCD device.
As shown in Figure 1A, the pixel of liquid crystal panel 1 is limited by horizontally disposed gate line 3 and vertically disposed data wire 4.
Although showing (n, m) individual pixel in figure, in the liquid crystal panel of reality, n number is provided with whole liquid crystal panel 1
Purpose gate line 3 and m number purpose data wire 4 are to form n × m number purpose pixel.In the gate line 3 and data wire 4 of pixel
Crosspoint in formed with thin film transistor (TFT) (TFT) 10.TFT10 includes：Gate electrode 11, scanning signal from gate line 3 apply to
Gate electrode 11；Semiconductor layer 12, its formed be activated on gate electrode 11 and when scanning signal applies to gate electrode 11 with
Form channel layer；Source electrode 13, it is formed on semiconductor layer 12 and picture signal is applied to source electrode by data wire 4
13；And drain electrode 14.TFT10 will apply to liquid crystal layer 40 from the picture signal of outside input.
Within the pixel, multiple public electrodes 5 and multiple pixel electrodes 7 are arranged to and the substantially parallel orientation of data wire 4.This
Outside, common wire 16 is arranged on the centre of pixel and is connected with public electrode 5.Pixel electrode line 18 be arranged on common wire 16 and
It is connected with pixel electrode 7.Pixel electrode line 18 is overlapping with common wire 16.Because common wire 16 and pixel electrode line 18 are handed over each other
It is folded, so forming storage capacitance in IPS mode LCD devices.
The liquid crystal molecule of liquid crystal layer 40 is positivity liquid crystal molecule or negative liquid crystal molecule.Therefore, in IPS mode LCD devices
In, liquid crystal molecular orientation into public electrode 5 and the substantial horizontal of pixel electrode 7 or vertical.It is positivity liquid crystal in liquid crystal molecule
During molecule, liquid crystal molecule horizontal alignment is consistent with the direction substantially with electrode, when liquid crystal molecule is negative liquid crystal molecule, liquid
Brilliant molecularly oriented is vertical into the direction substantially with electrode.
When TFT10 work and to pixel electrode 7 apply signal when, between public electrode 5 and pixel electrode 7 produce with
The substantially parallel in-plane field of liquid crystal panel 1.Liquid crystal molecule is rotated to parallel with liquid crystal panel 1 along the in-plane field, so as to anti-
The gray inversion of the sidepiece caused by the refractive anisotrop of liquid crystal molecule is stopped.
As shown in Figure 1B, gate electrode 11 is formed on first substrate 20, and is stacked with grid on whole first substrate 20
Pole insulating barrier 22.Semiconductor layer 12 is formed on gate insulator 22, and source electrode 13 and drain electrode 14 are formed in semiconductor
On layer 12.In addition, formed with passivation layer 24 on whole first substrate 20, and formed with for by all on passivation layer 24
The methods of such as rubbing makes the first orientation layer 28a with predetermined differently- oriented directivity of liquid crystal molecular orientation.
In addition, multiple public electrodes 5 are formed on first substrate 20, and pixel electrode 7 and data wire 4 are formed in grid
On insulating barrier 22, in-plane field E is produced between public electrode 5 and pixel electrode 7.
Formed with black matrix" 32 and color-filter layer 34 on second substrate 30.For the black matrix" 32 for preventing light from revealing
For the idle region of liquid crystal molecule.As shown, black matrix" 32 is mainly formed between TFT10 regions with pixel (i.e.
Gate line and data wire) between region.Color-filter layer 34 includes R (red), B (blueness) and G (green) colour filters and realized
Real color.Formed with external coating 36 to protect color-filter layer 34 and improve the smoothness of substrate on color-filter layer 34,
And the second orientation layer 28b formed with the differently- oriented directivity with determination on external coating 36.
Liquid crystal layer 40 is formed between first substrate 20 and second substrate 30, and first substrate 20 and second substrate 30 divide
The first polarizer 50 and the second polarizer 60 are not attached with, so that input is inclined to liquid crystal panel and from the light of liquid crystal panel output
Shake for the transmissivity for adjusting the light through liquid crystal panel.
The optical axis direction of first polarizer 50 and the second polarizer 60 is different according to the display pattern of LCD device.
Under common black mode, the polarization axle of the first polarizer 50 and the second polarizer 60 is perpendicular to one another.Therefore, thoroughly
Cross the light of the first polarizer 50 along the x-axis direction linear polarization to input to LCD device.When signal is not applied to liquid crystal panel,
The liquid crystal molecule of liquid crystal panel (i.e. horizontal with liquid crystal panel) orientation, and therefore, be incident to the light of liquid crystal panel along the y-axis direction
Liquid crystal panel is passed through with linear polarization state.Meanwhile the polarization axle of the second polarizer 60 of second substrate 30 is attached to having passed through
The polarization direction of the light of liquid crystal layer is vertical, and light is absorbed by the polarizer of upper substrate completely, so light is not defeated from the second polarizer 60
Go out, and therefore, screen display is black.
Under common white mode, the polarization axle of the first polarizer 50 and the second polarizer 60 is parallel to each other.Therefore, thoroughly
Cross the light of the first polarizer 50 along the x-axis direction linear polarization to input to LCD device.When signal is not applied to liquid crystal panel,
The liquid crystal molecule of liquid crystal panel (i.e. horizontal with liquid crystal panel) orientation, and therefore, be incident to the light of liquid crystal panel along the y-axis direction
Liquid crystal panel is passed through with linear polarization state.Meanwhile the polarization axle of the second polarizer 60 of second substrate 30 is attached to having passed through
The polarization direction of the light of liquid crystal layer is horizontal, and light is wholly transmissive by polarizer, so light exports from the second polarizer 60, and because
This, screen display is white.
First polarizer 50 and the second polarizer 60 are to include multiple layers of guest-host type polarizer.Fig. 2 is shown according to this
The structure of the polarizer of one embodiment is disclosed.Here, the first polarizer 50 and the second polarizer 60 that are shown in Figure 1B have
There is identical structure, and therefore, described using the first polarizer 50 as representational polarizer, and here, first is inclined
The device 50 that shakes will be referred to as polarizer rather than the polarizer of specific name first.
As shown in Fig. 2 substrate 52 is included according to the polarizer 50 of the embodiment of one embodiment of the disclosure, formed
The first polarization layer 56, the second polarization layer 57 and the 3rd polarization of oriented layer 54 and formation in oriented layer 54 in substrate 52
Layer 58.
Substrate 52 is formed by hyaline membrane or transparent material such as glass or plastics, and oriented layer 54 is by polyimides or poly-
Acid amides is formed.Because having carried out orientation to oriented layer 54 for example to rub, formed in whole oriented layer 54 along predetermined direction
There are many microflutes.
First polarization layer 56, the second polarization layer 57 and the 3rd polarization layer 58 are formed by material of main part and guest materials.Use
The reactive mesogen compound of liquid crystal characteristic is presented as material of main part in liquid crystal polymer.Here, reactive mesogen compound
(liquid crystal material for including the end group that can be polarized) to have the monomer molecule of liquid crystalline phase due to the end group including that can be polarized,
Wherein mesomorphic compound shows liquid crystal characteristic.
Because the first polarization layer 56, the second polarization layer 57 and the 3rd polarization layer 58 are applied to oriented layer 54, so main body
Material interacts to be orientated along differently- oriented directivity with the microflute formed in oriented layer 54.
Guest materials is formed by dichroic dye.Dichroic dye absorbs a polarization point in two polarized components
Measure and another polarized component is passed through the dichroic dye.Iodine group, anthraquinone radicals, porphyrin can be used even
Nitrogen, non-azo, azido group etc. are used as dichroic dye.
Dichroic dye, which absorbs the light with particular wavelength region or the light of particular wavelength region is passed through, is somebody's turn to do
Dichroic dye, and in embodiments, dichroic dye is absorbed with corresponding with R colors, G colors and B colors
Wavelength band light and such light is passed through the dichroic dye so that visible light polarization.
In addition, dichroic dye can be cyan dye, magenta dye or weld, rather than R dyestuffs, G dye
Material and B dyestuffs.That is, in an embodiment of the disclosure, polarization layer is formed as three layers, and each in polarization layer can
To absorb the light component or corresponding with cyan, magenta and yellow of the wavelength band corresponding with R colors, G colors and B colors
The light component of wavelength band, so as to absorb the visible ray along specific direction (direction that dichroic dye is orientated along it) so that visible
Light polarization.
In this aspect of the invention, the polarization layer of the polarizer in the present embodiment is not limited to three layers, but can also be according to bag
Include the type (i.e. according to the wavelength band of visible ray absorbed by corresponding polarization layer) of the dichroic dye in polarization layer and shape
As two layers or four layers or more layers.
By this way, in an embodiment of the disclosure, various types of dichroic dyes can be used, but
It is for purposes of description, the dichroic dye corresponding with R colors, G colors and B colors to be described below.
The dichroic dye of R colors, G colors and B colors is blended in material of main part and when material of main part is orientated
When be orientated along material of main part.That is, the direction of the microflute of R dyestuffs, G dyestuffs and B dyestuffs along oriented layer 54 is (i.e. along being orientated
The frictional direction carried out in layer 54) orientation.
By this way, because R dyestuffs, G dyestuffs and B dyestuffs are orientated along predetermined direction, so when light incidence, contaminated with R
Material, G the dyestuffs polarized component parallel with the differently- oriented directivity (absorbing direction) of B dyestuffs are absorbed, and vertical with absorbing direction
Polarized component transmission, thus incident light is polarized the light with particular polarization.
Fig. 3 is to show to apply to the material of main part of polarized material and the differently- oriented directivity of guest materials and light absorbs of oriented layer
The view of layer.
As shown in figure 3, ought wherein R dyestuffs, G dyestuffs and B dyestuffs 64 and liquid crystal polymer or reactive mesogen compound 62
Mix and R dyestuffs, G dyestuffs and B dyestuffs 64 are applied to the oriented layer to rub in the y-direction as the polarization layer 56 that object mixes
When 54, the microflute and the material of main part that are formed in oriented layer 54 interact, reactive mesogen compound 62 (or polymerizable mesogenic
Thing) it is orientated in the y-direction, and R dyestuffs, G dyestuffs and B dyestuffs 64 are orientated also along reactive mesogen compound 62, due to polymerization
It is underway, so differently- oriented directivity is kept.
When illumination is incident upon the polarization layer 56 that reactive mesogen compound 62 and dichroic dye 64 are orientated thereon, with
The polarized component in the parallel y directions of dichroic dye 64 is absorbed by dichroic dye 64, and therefore, y directions are changed into light
Absorption axiss, the polarized component in the x direction vertical with the orientation of dichroic dye 64 are transmitted rather than absorbed as it is, and
Therefore, x directions are changed into light transmission axle.
On the other hand, in an embodiment of the disclosure, the first polarization layer 156, the second polarization layer 157 and the 3rd are inclined
The layer 158 that shakes includes the dyestuff of different colours, and reason is as follows.
In an embodiment of the disclosure, after the formation of single polarization layer, all R dyestuffs, G dyestuffs and B dyes
Material can be included in single polarization layer.However, in this case, because various types of objects are blended in single main body
In, it is impossible to mix subject and object in the proper ratio so that accurately object cannot be made to be orientated along main body.
Therefore, it is not completely absorbed along the light of specific direction (such as x directions), but it is a certain amount of saturating along the light of specific direction
Penetrate, deteriorate degree of polarization.
As the result of such case, when subject and object is mixed so that object is precisely oriented in the proper ratio, by
It is not sufficiently mixed in various types of objects, degree of polarization is not kept equably in the whole region of visible ray, so as to reduce
Degree of polarization.
However, by contrast, in an embodiment of the disclosure, polarization layer is formed as multiple layers and different colours
Dichroic dye be respectively included in polarization layer 156, polarization layer 157 and polarization layer 158.That is, in a reality of the disclosure
Apply in scheme, due to the object with the color identical color with main body in a polarization layer be mixed, so main body with
Object can be mixed in the proper ratio, and therefore, object can be accurately orientated along main body, thus be had and the face
The light component of respective direction among the light of wavelength corresponding to form and aspect can be completely absorbed.
Here, R, G and B are respectively included in the first polarization layer 156, the second polarization layer 157 and the 3rd polarization layer 158, and
And here, identical dyestuff is not included in doubly in the first polarization layer 156, the second polarization layer 157 and the 3rd polarization layer 158
In two, and R dyestuffs, G dyestuffs and B dyestuffs can randomly be included in the first polarization layer 156, the second polarization layer 157 and
In three polarization layers 158.
Dichroic dye is mixed to the first polarization layer with 1wt% to 7wt%, preferably 3wt% to 7wt% amount
156th, in the second polarization layer 157 and the 3rd polarization layer 158, and here, dichroic dye can include cyan dye, magenta
Color dyestuff and weld and R dyestuffs, G dyestuffs and B dyestuffs.
When the dichroic dye being mixed into polarization layer 156, polarization layer 157 and polarization layer 158 is less than 1wt%, not
The light of irradiation is fully absorbed, deteriorates degree of polarization, and when dichroic dye is more than 7wt%, light transmission deterioration.
Dichroic dye with different colours is included in polarization layer 156, polarization layer 157 and polarization layer 158, and
Because the dichroic dye of polarization layer is accurately orientated along main body, so being incident to multiple polarization layers 156,157 and in light
In the case of in 158, the light point of the specific direction in the light with the wavelength band corresponding with R colors, G colors and B colors
Amount can be completely absorbed so that incident visible ray polarizes completely.
Table 1 shows the degree of polarization and transmissivity of the polarizer according to one embodiment of the disclosure, in table 1, compared for
Correlation technique PVA polarizers and many of dyestuff are blended in degree of polarization and the transmission of the single polarizer in single polarization layer
Rate.
[table 1]
Had according to the multilayer polarizer of one embodiment of the disclosure according to thickness in the range of 40% to 43%
Transmissivity (Ts) and the degree of polarization (P.E.) in the range of 99.1% to 99.5%, show transmissivity and degree of polarization according to thickness
The small change of degree.Therefore, compared with correlation technique PVA polarizers, even if using an embodiment according to the disclosure
Polarizer, it can also show and the transmissivity of PVA polarizers and the approximate transmissivity of degree of polarization and degree of polarization.
On the other hand, wherein the individual layer host and guest that is included in single polarization layer of all R dyestuffs, G dyestuffs and B dyestuffs is inclined
The utensil that shakes has the transmissivity in the range of about 25% to about 40% and the degree of polarization in the range of 90.3% to 99.2%, table
The big change of transmissivity and degree of polarization according to thickness is revealed.By contrast, according to the inclined of one embodiment of the disclosure
Shake in device, change is seldom produced according to thickness.Therefore, compared with individual layer host and guest's polarizer, even if the polarizer according to the disclosure
Desired transmissivity and degree of polarization are also ensured that under small thickness, is answered when according to the polarizer of one embodiment of the disclosure
During for LCD device, the thickness and weight of LCD device can be reduced.In the present embodiment, though when the first polarization layer 156,
When the gross thickness of second polarization layer 157 and the 3rd polarization layer 158 is equal to or less than 10 μm, preferably 5 μm, it is also possible to obtain institute's phase
The transmissivity and degree of polarization of prestige.
In the case where being formed and including multiple polarization layers of homogencous dyes, because homogencous dyes is with 1wt% to 7wt%, excellent
Selection of land 3wt% to 7wt% amount is included in each in polarization layer, so being included in various types of dyestuffs single
Situation in polarization layer is compared, and can include larger amount of dyestuff, and therefore, the wavelength corresponding with the color of corresponding dyestuff
Light can be completely absorbed.
Hereinafter, the method that will be described in polarizer of the manufacture with the structure.
Fig. 4 A to Fig. 4 D are to show sectional view of the manufacture according to the method for the polarizer of one embodiment of the disclosure.
This, can use various dyestuffs as dichroic dye, but for illustrative purposes, description R dyestuffs, G dyestuffs and B are contaminated
Material.
First, as shown in Figure 4 A, oriented material is applied to by hyaline membrane or transparent material such as glass or plastics and formed
Substrate 52 to form oriented layer 54.Here, oriented material is polyimides or polyamide.Applying polyimides or polyamide
Afterwards, heat is applied so that polyimides or polyamide cure are so as to forming oriented layer 54.
Afterwards, as shown in Figure 4 B, the locating friction roller 59 on the side of oriented layer 54, and make friction roller 59 towards orientation
The opposite side of layer 54 is mobile or can move substrate 52 so that oriented layer 54 is moved to be formed in oriented layer 54 along friction side
To multiple microflute (not shown) of orientation.
Afterwards, as shown in Figure 4 C, the first polarized material obtained in the following way is applied to oriented layer 54 and solidified
To form the first polarization layer 56：By 3wt% to the 7wt% dichroic dye and main body such as liquid with red (R) color
Crystalline polymer (or liquid crystal polymer), liquid crystalline small molecules or oligomer mixing.When applying the first polarized material, main body and orientation
The microflute of layer is interacted and (that is, controlled by the anchoring energy of oriented layer) to be orientated along predetermined direction, while, as visitor
The dichroic dye with red (R) color of body is orientated along main body.In this state, solidify the first polarization layer 56
And the dichroic dye with red (R) color is set constantly to be orientated along preset direction.
Here, as the first polarized material, 3wt% to the 7wt% dichroism with green (G) color can be contaminated
Material mixes with main body, or 3wt% to the 7wt% dichroic dye with blue (B) color can mix with main body.Can
So that the first polarization layer 56 to be solidified by applying heat or irradiation light.
Afterwards, as shown in Figure 4 D, will be inclined by mix the dichroic dye with green (G) color to obtain second
The material that shakes applies to the first polarization layer 56 and is cured to form the second polarization layer 57.And afterwards, there will be blueness by mixing
(B) dichroic dye of color and the 3rd polarized material that obtains apply to the second polarization layer 57 and to be cured to form the 3rd inclined
Shake layer 58.
When applying the second polarized material and three polarized materials, the anchoring energy of oriented layer still influences the 3rd polarized material
And the second polarized material main body, and so as to which, the main body of the main body of the second polarized material and the 3rd polarized material is along pre-
Put direction (frictional direction) orientation and dichroic dye is orientated also along main body.In this state, the second polarizer is made
57 and the 3rd polarizer 58 solidify and cause the dichroic dye with green (G) color and blue (B) color along preset side
To being constantly orientated.
Fig. 5 A to Fig. 5 C are the sectional views for the structure for showing the polarizer according to disclosure another embodiment.With in Fig. 2
The embodiment shown be formed with three polarization layers and a type of dichroic dye is included in polarization layer
Each in polarizer compare, in the present embodiment, polarizer, which includes two polarization layers and a polarization layer, to be included
Two kinds of dichroic dye and another layer includes a type of dichroic dye.
As shown in Figure 5A, substrate 152, the orientation formed in substrate 152 are included according to the polarizer 150 of the present embodiment
The first polarization layer 156 and the second polarization layer 157 of layer 154 and formation in oriented layer 154.
First polarization layer 156 includes reactive mesogen compound 162 (or liquid crystal polymer), has red (R) color
The dichroic dye 164r and dichroic dye 165g with green (G) color, and the edge of reactive mesogen compound 162
The frictional direction orientation of oriented layer 154, and the dichroic dye 164r with red (R) color and with green (G) face
The dichroic dye 165g of color is orientated along reactive mesogen compound 162.Here, the first polarization layer 156 includes 1wt% extremely
The 3wt% dichroic dye 164r with red (R) color and the dichroic dye 165g with green (G) color.
Second polarization layer 157 includes reactive mesogen compound 162 (or liquid crystal polymer) and with blue (B) color
Dichroic dye 164b, and frictional direction orientation of the reactive mesogen compound 162 along oriented layer 154, and with indigo plant
The dichroic dye 164b of color (B) color is orientated along reactive mesogen compound 162.Here, 1wt% to 7wt% tool
The dichroic dye 164b for having blue (B) color is included in the second polarization layer 157.
In addition, in the polarizer with this structure, reactive mesogen compound 162 and dichroic dye 164r,
Dichroic dye 164g and dichroic dye 164b orientations, with the wavelength corresponding with R colors, G colors and B colors
The light component parallel with the direction is absorbed so that incident light polarization among the light of band.
As shown in Figure 5 B, with this structure polarizer include reactive mesogen compound 162 (or liquid crystal polymer),
Dichroic dye 164g with green (G) color and dichroic dye 164b with blue (B) color, and react
Property frictional direction orientation of the mesomorphic compound 162 along oriented layer 154, and with the dichroic dye of green (G) color
164g and the dichroic dye 164b with blue (B) color are orientated along reactive mesogen compound 162.
In addition, the second polarization layer 157 includes reactive mesogen compound 162 (or liquid crystal polymer) and with red (R)
The dichroic dye 164r of color, and frictional direction orientation of the reactive mesogen compound 162 along oriented layer 154, and
Dichroic dye 164r with red (R) color is orientated along reactive mesogen compound 162.
Here, the first polarization layer 156 includes 1wt% to the 3wt% dichroic dye 164g with green (G) color
With 1wt% to the 3wt% dichroic dye 164b with blue (B) color, and the second polarization layer 157 includes 1wt%
To the 7wt% dichroic dye 164r with red (R) color.
As shown in Figure 5 C, with the structure polarizer include reactive mesogen compound 162 (or liquid crystal polymer),
Dichroic dye 164r with red (R) color and dichroic dye 164b with blue (B) color, and react
Property frictional direction orientation of the mesomorphic compound 162 along oriented layer 154, and the dichroic dye 164r of red (R) color and
Dichroic dye 164b with blue (B) color is orientated along reactive mesogen compound 162.
In addition, the second polarization layer 157 includes reactive mesogen compound 162 (or liquid crystal polymer) and with green (G)
The dichroic dye 164g of color, and frictional direction orientation of the reactive mesogen compound 162 along oriented layer 154, and
Dichroic dye 164g with green (G) color is orientated along reactive mesogen compound 162.
Here, the first polarization layer 156 includes 1wt% to the 3wt% dichroic dye 164r with red (R) color
With 1wt% to the 3wt% dichroic dye 164b with blue (B) color, and the second polarization layer 157 includes 1wt%
To the 7wt% dichroic dye 164g with green (G) color.
By this way, in the polarizer with structure as shown in Figure 5 A to FIG. 5 C, two polarization layers are provided with, and
And one layer includes a type of dichroism and contaminates including the dichroic dye with two kinds of color and another layer
Material.Therefore, compared with the dichroic dye of two of which type is included in the situation in single layer, substantial amounts of dye can be included
Material, and therefore, the light with the wavelength corresponding with the color of dyestuff can be completely absorbed.In addition, with the knot shown in Fig. 2
Structure is compared, and reduces the number of polarization layer, is simplified technique and is reduced the thickness of polarizer.
On the other hand, in Fig. 5 A to Fig. 5 C, the polarization layer of the dichroic dye with two kinds of color is included
Formed in bottom and the polarization layer including the dichroic dye with a type of color is formed in top, still
Polarization layer including the dichroic dye with a type of color can be formed in bottom and including with two kinds
The polarization layer of the dichroic dye of the color of type can be formed in top.
Fig. 6 is the sectional view for the structure for showing the polarizer according to disclosure another embodiment.
As shown in fig. 6, the polarizer 250 with this structure includes substrate 252 and formed in substrate 252 first
Polarization layer 256, the second polarization layer 257 and the 3rd polarization layer 258.With with shown in Fig. 2 wherein oriented layer formed substrate with
Between polarization layer and the polarizer of structure that the main body that polarizes is orientated along predetermined direction is compared, in this embodiment, no
Form oriented layer and polarization layer 256, polarization layer 257 and polarization layer 258 are formed directly into substrate 252.
In this embodiment, because linear polarization material is illuminated as material of main part, it is possible to which use is specific
The light orientation polymer or photosensitive polymer with photosensitive group of optical anisotropy and liquid crystal characteristic, example are presented under temperature section
Such as liquid crystal polymer or liquid crystalline small molecules.
Such material of main part includes polyacrylate main chain and the one or more side chains being connected with main chain, and
And one or two kinds of aromatic materials are provided with each in side chain, and light-sensitive material is arranged to the end group of side chain,
So as to produce photoisomerization reaction or photodimerizationization reaction.Furthermore, it is possible to hydrogen colour coupler (coupler) is set to be used as end group.
Photoisomerization reaction occurs when linearly polarized light exposes to material of main part, in photosensitive polymer and photodimerizationization is anti-
Should, so as to produce the anisotropy of photosensitive polymer so that photosensitive polymer is orientated along predetermined direction.This will be retouched in detail
State.
When illumination is incident upon the photosensitive polymer as material of main part, the end group being attached with the side chain of photosensitive polymer causes
Generation photoisomerization reacts and photodimerizationization reaction.That is, when linearly polarized light is exposed to optically anisotropic photosensitive polymerization
During thing, the molecule absorption luminous energy of the side chain of (i.e. parallel with the field direction of light) parallel with the polarization direction of light of photosensitive polymer,
So as to which photoisomerization reaction occur.
Therefore, the side chain of (i.e. parallel with the direction of electric field) parallel with the polarization direction of light forms Z isomers, and with electricity
The vertical side chain in direction be left the E isomer with the weak anisotropy along the direction of the E isomer retained, and because
This, the direction of the side chain of total material of main part is confirmed as vertical with the polarization direction of light.
Use photosensitive polymer as material of main part manufacture polarizer in the case of, guest materials for example with R colors,
The dichroic dye of G colors and B colors is blended in material of main part, and R dyestuffs, G dyestuffs and B dyestuffs are along photosensitive polymerization
The direction orientation of the side chain of thing.That is, R dyestuffs, G dyestuffs and B dyestuffs are orientated to vertical with the linear polarization of the light of irradiation.
By this way, because R dyestuffs, G dyestuffs and B dyestuffs are orientated along predetermined direction, so when input light, contaminated with R
Material, G the dyestuffs polarized component parallel with the differently- oriented directivity (absorbing direction) of B dyestuffs are absorbed, and vertical with absorbing direction
Polarized component transmit so that incident light polarization.
In the polarizer with aforementioned structure, be formed as including the dichroism dye with different colours due to polarization layer
Multiple layers of material can be such that incident light polarizes completely to absorb the light with respective wavelength band in each layer, and therefore.
The method of polarizer of the manufacture with this structure and the manufacture method shown in Fig. 4 A to Fig. 4 D are substantially similar.
In the polarizer of the structure shown in Fig. 2, there is provided oriented layer, it is necessary to the processing to be rubbed to oriented layer, but
In this embodiment, because main body is by irradiating light orientation without oriented layer, so the first polarized material is directly applied
Substrate 252 is added to, linearly polarized light exposes to the first polarized material so that the first polarized material solidifies and makes the first polarized material
Subject and object is orientated along direction (linear polarization etc.), so as to formed have along specific direction the axis of homology and absorption axiss the
One polarization layer 256, without forming oriented layer and friction process.Furthermore it is possible to repeatedly carry out polarized material and light irradiation work
Skill is to form the second polarization layer 257 and the 3rd polarization layer 258.
Therefore, in this embodiment, due to not needing oriented layer, it is possible to reduce manufacturing cost, can simplify
The structure of polarizer and the minimizing thickness that polarizer can be made.Further, since in the polarizer with the structure not
The technique for needing to rub to oriented layer, it is possible to simplify manufacturing process.
Foregoing embodiments and advantage are only exemplary and are not construed as limiting the disclosure.This teaching can be easy
Ground is applied to other kinds of device.The explanation is intended to scope that is illustrative, and being not intended to limitation claim.To this
Many replacements, modification and variation are obvious for the technical staff in field.The spy of exemplary described herein
Sign, structure, method and other characteristics can be shown with reference to obtain other exemplary and/or replacement in many ways
Example property embodiment.
Because in the case where not departing from the characteristic of feature of present invention, this feature of present invention can be implemented in several ways,
It is so it should also be understood that unless otherwise stated, any thin in the details that the embodiment above is not limited by the foregoing description
Section limitation, but widely the embodiment above should be considered as in its scope as limiting appended claims, and
And therefore, all changes fallen within the border and boundary or the equivalent of these borders and boundary of claim and modification
It is therefore intended that included by appended claims.
Claims (27)
1. a kind of polarizer, including：
Substrate；And
Multiple polarization layers on the substrate,
Each in wherein described polarization layer includes main body and dichroic dye,
The color of a polarization layer in wherein the multiple polarization layer and the face of other polarization layers in the multiple polarization layer
Color is different.
2. polarizer according to claim 1, in addition to：
Oriented layer between the substrate and the multiple polarization layer.
3. polarizer according to claim 2, wherein the main body is by selected from reactive mesogen compound, liquid crystal polymer
Formed with the material in oligomer.
4. polarizer according to claim 1, wherein the main body includes photosensitive group and photosensitive polymer.
5. polarizer according to claim 1, wherein the dichroic dye includes orchil, green colouring material and indigo plant
Color dyestuff.
6. polarizer according to claim 1, wherein the dichroic dye includes cyan dye, weld and product
Orchil.
7. polarizer according to claim 1, wherein the substrate includes transparent glass, plastics or film.
8. polarizer according to claim 1, wherein the multiple polarization layer includes：
The first polarization layer including the dichroic dye with red color；
The second polarization layer including the dichroic dye with green color；And
The 3rd polarization layer including the dichroic dye with Blue.
9. polarizer according to claim 1, wherein the multiple polarization layer includes：
First polarization layer, first polarization layer include being selected from the dichroic with red color, green color and Blue
Two kinds of dichroic dye in property dyestuff；And
Second polarization layer, second polarization layer include the dichroic dye with other colors.
10. polarizer according to claim 1, wherein the multiple polarization layer includes：
The first polarization layer including the dichroic dye with cyan color；
The second polarization layer including the dichroic dye with magenta color；And
The 3rd polarization layer including the dichroic dye with yellow color.
11. polarizer according to claim 1, wherein the multiple polarization layer includes：
First polarization layer, first polarization layer include being selected from cyan color, magenta color and yellow color two to
Two kinds of dichroic dye in color dyestuff；And
Second polarization layer, second polarization layer include the dichroic dye with other colors.
12. the polarizer according to claim 8 or 10, including the dichroism in each of the polarization layer
The content of dyestuff is in the range of 1wt% to 7wt%.
13. polarizer according to claim 12, contaminated including the dichroism in each of the polarization layer
The content of material is in the range of 3wt% to 7wt%.
14. the polarizer according to claim 9 or 11, including the dichroism in first polarization layer
The content of dyestuff is included in containing for the dichroic dye in second polarization layer in the range of 1wt% to 3wt%
Amount is in the range of 1wt% to 7wt%.
15. polarizer according to claim 1, wherein the number of the polarization layer is according to the light absorbed by each polarization layer
Wavelength band determine.
16. polarizer according to claim 1, wherein the thickness of the multiple polarization layer is 10 μm or smaller.
17. polarizer according to claim 16, wherein the thickness of the multiple polarization layer is 5 μm or smaller.
18. a kind of liquid crystal display device, including：
Liquid crystal panel for display image；And
The polarizer at least one of two surfaces of the liquid crystal panel is attached to,
Wherein described polarizer includes substrate and multiple polarization layers on the substrate, the polarization layer have main body and two to
Color dyestuff,
The color of a polarization layer in wherein the multiple polarization layer and the face of other polarization layers in the multiple polarization layer
Color is different.
19. liquid crystal display device according to claim 18, in addition to：
Oriented layer between the substrate and the multiple polarization layer.
20. liquid crystal display device according to claim 18, wherein the multiple polarization layer includes：
The first polarization layer including the dichroic dye with red color；
The second polarization layer including the dichroic dye with green color；And
The 3rd polarization layer including the dichroic dye with Blue.
21. liquid crystal display device according to claim 18, wherein the multiple polarization layer includes：
First polarization layer, first polarization layer include being selected from the dichroic with red color, green color and Blue
Two kinds of dichroic dye in property dyestuff；And
Second polarization layer, second polarization layer include the dichroic dye with other colors.
22. liquid crystal display device according to claim 18, wherein the multiple polarization layer includes：
The first polarization layer including the dichroic dye with cyan color；
The second polarization layer including the dichroic dye with magenta color；And
The 3rd polarization layer including the dichroic dye with yellow color.
23. liquid crystal display device according to claim 18, wherein the multiple polarization layer includes：
First polarization layer, first polarization layer include being selected from cyan color, magenta color and yellow color two to
Two kinds of dichroic dye in color dyestuff；And
Second polarization layer, second polarization layer include the dichroic dye with other colors.
24. the liquid crystal display device according to claim 20 or 22, including in each of the polarization layer
The content of dichroic dye is in the range of 1wt% to 7wt%.
25. liquid crystal display device according to claim 24, including two in each of the polarization layer to
The content of color dyestuff is in the range of 3wt% to 7wt%.
26. the liquid crystal display device according to claim 21 or 23, described in first polarization layer
The content of dichroic dye is in the range of 1wt% to 3wt%, the dichroism that is included in second polarization layer
The content of dyestuff is in the range of 1wt% to 7wt%.
27. liquid crystal display device according to claim 18, wherein the liquid crystal panel includes in-plane-switching-mode liquid crystal
Display device, LCD device in vertical orientation mode, fringing field translative mode liquid crystal display device and twisted nematic mode liquid
Crystal device.
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2014-0073713 | 2014-06-17 | ||
| KR1020140073713A KR102347474B1 (en) | 2014-06-17 | 2014-06-17 | Cotalable polarizer and liquid crystal display device having thereof |
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| CN105301687B true CN105301687B (en) | 2018-02-09 |
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| CN201510333413.6A Expired - Fee Related CN105301687B (en) | 2014-06-17 | 2015-06-16 | Polarizer can be coated with and there is its liquid crystal display device |
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| Country | Link |
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| US (1) | US9529227B2 (en) |
| KR (1) | KR102347474B1 (en) |
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| US5122887A (en) * | 1991-03-05 | 1992-06-16 | Sayett Group, Inc. | Color display utilizing twisted nematic LCDs and selective polarizers |
| US5825543A (en) * | 1996-02-29 | 1998-10-20 | Minnesota Mining And Manufacturing Company | Diffusely reflecting polarizing element including a first birefringent phase and a second phase |
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| JP2010230924A (en) * | 2009-03-26 | 2010-10-14 | Fujifilm Corp | Method for manufacturing light absorption anisotropic film and light absorption anisotropic film |
| KR20100130762A (en) * | 2009-06-04 | 2010-12-14 | 삼성전자주식회사 | Display device having polarizing layer and manufacturing method of the same |
| KR101941440B1 (en) * | 2011-10-05 | 2019-01-23 | 엘지디스플레이 주식회사 | Cotalable polarizer and method of fabricating thereof |
| KR20130140327A (en) * | 2012-06-14 | 2013-12-24 | 한국과학기술원 | Terahertz waves polarizer using extraordinary optical transmission and fabrication method of the same |
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2014
- 2014-06-17 KR KR1020140073713A patent/KR102347474B1/en active IP Right Grant
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2015
- 2015-06-16 CN CN201510333413.6A patent/CN105301687B/en not_active Expired - Fee Related
- 2015-06-17 US US14/741,660 patent/US9529227B2/en active Active
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| CN1322304A (en) * | 1998-10-14 | 2001-11-14 | 美国3M公司 | Guest-host polarizers |
| CN1413303A (en) * | 1999-10-25 | 2003-04-23 | 3M创新有限公司 | Dual colour guest-host polarizers and devices containing guest-host polarizers |
| CN1912659A (en) * | 2005-08-10 | 2007-02-14 | 台湾薄膜电晶体液晶显示器产业协会 | Integral metal type polarization film/optical film structure and its manufacturing method |
| CN101470228A (en) * | 2007-12-28 | 2009-07-01 | 住友化学株式会社 | Polaroid sheet and manufacturing method thereof |
| CN103033868A (en) * | 2011-07-07 | 2013-04-10 | 住友化学株式会社 | Polarizing device, round polarizing plate and method for manufacturing the same |
| CN102879848A (en) * | 2011-07-12 | 2013-01-16 | 住友化学株式会社 | Polarizer and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US9529227B2 (en) | 2016-12-27 |
| KR20150144631A (en) | 2015-12-28 |
| US20150362799A1 (en) | 2015-12-17 |
| KR102347474B1 (en) | 2022-01-04 |
| CN105301687A (en) | 2016-02-03 |
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